Study on the Mechanical Characteristics of High-Filled Soil Culverts Based on the Load Reduction Technology of Using EPS Boards
Based on revelation of the interaction mechanism between the culvert and the filled soil,the paper analyzed the principle of the culvert load reduction method,compared the simulation results of the finite element software for two working conditions of the conventional fill and the EPS board,and investigated the load reduction characteristics of the EPS material and revealed the changing rule for pressure and displacement of the culvert soil after load reduction.The results show that the EPS board can significantly reduce the soil pressure on the top and sides of the culvert,and the soil pressure on the top of the culvert is 0.42 times of the soil column pressure(the thickness of EPS board is10 cm);the coefficient of the lateral soil pressure for the culvert with EPS board is 0.17,and the EPS board can also reduce the lateral earth pressure effectively;the deformation of the culvert soil and the pressure to the base bottom can be improved by adopting the EPS load reduction technology.The results of this research can provide effective guidance for designs and constructions of relative engineering projects.
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